Potatoes Au Gratin

Potatoes Au Gratin

Tender potato and onion slices are layered and baked in a rich and delicious cheese sauce.

Ingredients

  • 2 ½ pounds red potatoes
  • 1 onion
  • 3 tablespoons butter
  • 3 tablespoons flour
  • 1 teaspoon dry mustard powder
  • 2 cups milk
  • 1 cup cheddar cheese

    shredded

  • ½ cup gruyere cheese

    shredded

  • salt & pepper to taste

Directions

  1. 1

    Preheat oven to 400°F.

  2. 2

    Wash potatoes and slice into ⅛" thin slices. Slice onion as thin as possible.

  3. 3

    Layer potatoes and onions in little stacks. Place stacks upright in a greased casserole 2.5qt to 3qt dish.

  4. 4

    Melt butter & flour in a saucepan and cook 2-3 minutes. Add seasonings and milk. Whisk over medium heat until thick and bubbly. Remove from heat and stir in cheeses until melted.

  5. 5

    Spoon cheese sauce over potatoes. Cover with foil (sprayed with cooking spray) and bake 60 minutes.

  6. 6

    Remove foil and bake an additional 20-30 minutes or until lightly browned and potatoes are cooked. Cool 15 minutes before serving.

Potatoes Au Gratin

Potatoes Au Gratin

5.0(1.0k)

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About this Recipe

Looking for the ultimate comforting side dish that feels both elegant and deeply satisfying? This Potatoes Au Gratin recipe delivers tender slices of potato and onion, enveloped in a rich, velvety cheese sauce, promising a memorable addition to any meal.

Why This Recipe Works

What truly sets this Potatoes Au Gratin apart is the harmonious blend of cheeses and the thoughtful layering. The combination of sharp cheddar and nutty Gruyere creates a complex, deeply flavorful sauce that blankets every tender potato and sweet onion slice. The touch of dry mustard powder isn't for pungency, but rather a classic secret ingredient that subtly amplifies the savory notes of the cheese, making the sauce incredibly irresistible.

What to Expect

Prepare for a dish where every forkful is pure comfort. You'll experience beautifully tender red potatoes, perfectly cooked through but not mushy, interspersed with delicate, sweet onion. The star, of course, is the luxurious, creamy cheese sauce—thick enough to coat, yet smooth and melty. It's a savory, rich, and utterly satisfying experience, perfect for a cozy dinner or a special occasion. This isn't a light dish; it’s a celebration of potatoes and cheese, designed to be deeply rewarding.

Customization & Variations

While this recipe shines as is, you can easily adapt it to your taste. For an even bolder flavor, consider adding a pinch of nutmeg to the cheese sauce, a classic pairing with Gruyere. If you prefer a milder onion flavor, use sweet onions. You could also experiment with adding a few sprigs of fresh thyme or rosemary between the potato layers for an aromatic twist.

Serving & Context

Potatoes Au Gratin makes an incredible accompaniment to roasted meats, holiday feasts, or simply as a show-stopping side dish for a family dinner. Serve it directly from the baking dish, allowing guests to savor its bubbling, golden-brown top and creamy interior.

Frequently Asked Questions